Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 3,051	$ 1,566
Accounts receivable, net of allowance of $1,318 and $1,674, respectively	110,994	137,544
Inventory	89,632	84,622
Other current assets	6,946	8,228
Total current assets	210,623	231,960
Property, plant and equipment, net	2,246,245	2,199,253
Operating lease right-of-use assets	16,111	16,706
Intangible assets, net	35,196	37,077
Contract costs, net	35,998	34,736
Deferred tax assets	29,146	33,353
Other assets	38,307	37,079
Non-current assets of discontinued operations	8,280	8,586
Total assets	2,619,906	2,598,750
Current liabilities:
Accounts payable, trade	78,999	64,324
Accrued liabilities	92,213	76,915
Deferred revenue	5,889	7,332
Total current liabilities	177,101	148,571
Long-term debt	1,547,274	1,548,334
Operating lease liabilities	14,170	14,861
Deferred tax liabilities	934	854
Other liabilities	19,509	17,569
Non-current liabilities of discontinued operations	7,868	7,868
Total liabilities	1,766,856	1,738,057
Commitments and contingencies (Note 6)
Equity:
Preferred stock - $0.01 par value, 50,000,000 shares authorized, zero issued
Common stock: $0.01 par value 250,000,000 shares authorized, 164,903,900 and 163,439,013 shares issued, respectively	1,649	1,634
Additional paid-in capital	3,460,259	3,456,777
Accumulated deficit	(2,516,500)	(2,509,133)
Treasury stock: 8,207,390 and 7,810,548 common shares, at cost, respectively	(92,358)	(88,585)
Total equity	853,050	860,693
Total liabilities and equity	$ 2,619,906	$ 2,598,750

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).